Design multilayer PCBs for energy IoT devices, finalize schematics and layouts with embedded teams, optimize for DFM and EMC, select components for mass production, run signal/thermal/power simulations, debug prototypes, and collaborate with vendors/EMS to bring boards to production.

Own end-to-end design and delivery of IoT and real-time data platform features: define architecture, build Node.js backends and React/Vue dashboards, integrate device telemetry (MQTT/WebSockets), manage MongoDB and time-series data, ensure CI/CD and cloud deployments, and mentor junior developers.